The Rage Against The Machine guitarist appeared at demonstrations earlier this week in an attempt to block a proposed economic bill by Wisconsin Governor Scott Walker, which Morello contends will break up local unions.
"I come from a coal-mining town in central Illinois where everybody was union," he told Rolling Stone. "I grew up with a firm belief that the leverage we have as working people is through the union. It's the only counterweight to the raw greed of corporate power."
Morello was joined by the MC5's Wayne Kramer and Rise Against singer Tim Mcilrath for a performance of protest songs on Monday outside the state capital building in Madison, which has been the site of mass-picketing for several days.
Despite the contentious nature of the debate, Morello claimed that he's been heartened by solidarity among the local community.
"What's happened so far might be the most inspiring 24 hours of my life as an activist," he explained.
"I've never seen this kind of outpouring of unapologetic, steel-backboned support for union causes in the United States. The Madison police were delivering bratwurst to the protesters inside the capitol, and the kids were thanking them. It was unbelievable."
A vote on Walker's economic bill is expected to take place in the Wisconsin State Senate in the next few days.